Soursen

Independent writing on infrastructure, AI, security and crypto.

Infrastructure

Infrastructure covers how networks and power fail, checked against the release or the incident report that records what failed.

Banner for “How China Built the Thing Everyone Else Has to Buy From”

Infrastructure

How China Built the Thing Everyone Else Has to Buy From

China ran a trade surplus of $938 billion in the first 9 months of 2026, installed 59% of the world’s new factory robots, and refines around 90% of the planet’s rare earths. The interesting question is not whether it is ahead in manufacturing, the numbers settle that, but how a few deliberate choices compounded into a lead that tariffs and chip bans have not reversed. I went through the mechanics.

10 min read

Banner for “You Can Build a Serious Home Server for About $1,000, and It Solves a Problem Your Phone Cannot”

Infrastructure

You Can Build a Serious Home Server for About $1,000, and It Solves a Problem Your Phone Cannot

A used enterprise server that cost a company thousands of dollars new sells for around $250 today, and with a few parts you have a private cloud that runs AI agents, stores your photos, records your cameras, and lets you walk through an airport with a phone that holds almost nothing. I went through the exact parts, the real prices in the current memory shortage, and what to actually run on it.

12 min read

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